A small town in far eastern Cuba is recovering from flooding that killed at least six people after Hurricane Oscar crossed the island's eastern coast as a tropical storm with winds and heavy rain.

Seventy percent of Cuba's population now has power, four days after a nationwide blackout triggered by the collapse of the island's largest power plant, and as the country recovers from Hurricane Oscar,

Cuba's power grid has ground to a halt for a second time in as many days, leaving 10 million on the island without power and the Caribbean island in a growing sense of crisis.

Electricity outages have paralyzed an already-crippled economy, leading to shortages of everything from cash to running water.

The repeated failure of the power grid and a hurricane that has swamped the island’s eastern end has many Cubans fed up, posing a challenge to the Communist government.

President Miguel Díaz-Canel urged calm and warned against vandalism from citizens angry at the loss of power over three days so far.

Cuba's electrical grid collapsed again on Sunday, the fourth such failure in 48 hours, with a hurricane making landfall to compound the island's misery and threaten further havoc on its decrepit infrastructure.